Home / 12,393.10-18,593.70-4,072.78

Finding the Fourth Proportional to 12,393.10, 18,593.70 and 4,072.78

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Solution

The fourth proportional to 12,393.10, 18,593.70 and 4,072.78 is: 6,110.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.10 : 18,593.70 = 4,072.78 : x
  2. Step 2: Convert to fraction form
    12,393.10/18,593.70 = 4,072.78/x
  3. Step 3: Cross multiply
    12,393.10x = 18,593.70 × 4,072.78
  4. Step 4: Simplify right side
    12,393.10x = 75,728,049.49
  5. Step 5: Solve for x
    x = 75,728,049.49/12,393.10
  6. Step 6: Final answer
    x = 6,110.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.